[jlkuester7]

Not 100% sure why this is trending, but anyone here interested in the Code of Cannon Law for the Roman Catholic Church, might also find this of interest: https://github.com/DivinumOfficium/ (no affiliation)

This project maintains a digital source for multiple old versions of the "Divine Office" (aka Liturgy of the Hours or Roman Breviary). I find it particularly interesting from a FLOSS perspective. The source data is all very old (none/expired copyrights), but the calculations for which readings/prayers should be said for each particular day of the year are non-trivial (and the readings/prayers for a particular day are different from year-to-year). So, the logic included maintained in the project is a real value-add.